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在二连盆地马尼特坳陷,利用地震速度谱求取层速度,将层速度与同深度的综合速度相减,得出剩余层速度。将剩余层速度与钻井资料的砂岩泥岩百分比含量相比较,可求出两者的关系。再与地震构造图,等厚图等资料综合对比,可用来研究工区的岩性分布、沉积环境和物源方向等,进而预测工区的生油条件、储油条件及其有利地区。此项试验结果与地震地层学解释的结果相当吻合。
In the Manit Depression of Erlian Basin, the velocity of the layer is calculated using the seismic velocity spectrum, and the velocity of the layer is subtracted from the integrated velocity of the same depth to obtain the velocity of the remaining layer. The relationship between the residual velocity and the percentage of sandstone and mudstone in drilling data can be obtained. Then it can be used to study the lithology distribution, depositional environment and provenance direction of the work area in comprehensive contrast with the seismic tectonic map and isopach map, so as to predict the oil generating conditions, oil storage conditions and favorable areas in the work area. This test result is in good agreement with the result of seismic stratigraphic interpretation.